I haven't bothered growing my own Beetroot for several years, preferring to buy them vacuum packed, ready prepared, in threes; and for next to nothing.
I can't imagine that there's a great deal of difference between home and farm produced. Both are grown outdoors, both are prepared in much the same way, and both taste very similar; I really wouldn't know the difference in a blind taste test.
However, this year I did put in a row at Haddock's, and they have done very well. I harvested the first few yesterday.
I love the earthy flavour of Beetroot, I believe they're very good for you too; most red things are!
The next time I prepare some, I'll do twice the amount. It goes so quickly.